94443121 has 2 divisors, whose sum is σ = 94443122. Its totient is φ = 94443120.

The previous prime is 94443113. The next prime is 94443137. The reversal of 94443121 is 12134449.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92160000 + 2283121 = 9600^2 + 1511^2 .

It is an emirp because it is prime and its reverse (12134449) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 94443121 - 2³ = 94443113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 94443121.

It is not a weakly prime, because it can be changed into another prime (94443161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47221560 + 47221561.

It is an arithmetic number, because the mean of its divisors is an integer number (47221561).

Almost surely, 2^94443121 is an apocalyptic number.

It is an amenable number.

94443121 is a deficient number, since it is larger than the sum of its proper divisors (1).

94443121 is an equidigital number, since it uses as much as digits as its factorization.

94443121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 28.

The square root of 94443121 is about 9718.1850671820. The cubic root of 94443121 is about 455.3969421790.

The spelling of 94443121 in words is "ninety-four million, four hundred forty-three thousand, one hundred twenty-one".